Help with this Framus

[Manuelpg]

Hello everyone. Here my Framus (black) and a friend's Framus. I have a question. Apparently, they are two 5/355s, but mine has a 5/155 engraved on the neck. It doesn't seem replaced. Does anyone have an idea? The neck plate is also different. Thanks.

[rain-air]

Hello,
it seems like it was a "one neck fits all and gets whatever stamp"-situation back then. no need to worry! (mine, which is an otherwise undocumented offset model, also has the 3/355 stamp.

[Manuelpg]

Thank you for your response. The main difference between both is that mine has a 10" neck radius and other is 7.25".
My friend's guitar is from 1972 and mine is from 1973. Both sounds great.